| Class Number |
Class Name |
No. of Patents |
| 250/328 |
Automatic/serial detection of similar sources |
171 |
| 250/252.1 |
Calibration or standardization methods |
889 |
| 250/335 |
Cloud or bubble chambers |
5 |
| 250/271 |
Coded record and readers; invisible radiant energy type |
75 |
| 250/324 |
Corona irradiation |
313 |
| 250/325 |
Charging of moving object |
163 |
| 250/326 |
Charging of objects |
141 |
| 250/251 |
Electrically neutral molecular or atomic beam devices and methods |
417 |
| 250/305 |
Electron energy analysis |
396 |
| 250/428 |
Fluent material containment, support or transfer means |
67 |
| 250/431 |
With cleaning means |
60 |
| 250/432R |
With irradiating source or radiating fluent material |
296 |
| 250/435 |
Including a flowthrough transfer means |
264 |
| 250/436 |
Flow-enclosed radiation source |
251 |
| 250/437 |
Tortuous path type |
91 |
| 250/438 |
With a flow-modifying surface |
101 |
| 250/434 |
Including a gravity-type transfer means |
30 |
| 250/433 |
Including a movable surface transfer means |
18 |
| 250/432PD |
Parent-daughter isotope separators |
72 |
| 250/429 |
With temperature control |
25 |
| 250/430 |
With valve or pump actuator |
31 |
| 250/910 |
Food sample analysis using invisible radiant energy source |
88 |
| 250/253 |
Geological testing or irradiation |
257 |
| 250/256 |
Well testing apparatus and methods |
199 |
| 250/258 |
By interface of fluids |
18 |
| 250/265 |
Plural detectors |
81 |
| 250/266 |
With spacing or direction of detectors |
141 |
| 250/257 |
With casing collar detection |
6 |
| 250/261 |
With detector or detector circuit control |
54 |
| 250/262 |
With particular detector signal circuit |
134 |
| 250/264 |
Having plural detectors |
75 |
| 250/263 |
With detector signal modulation or carrier wave |
13 |
| 250/259 |
With placement of tracer in or about well |
54 |
| 250/260 |
Tracer being or including radioactive material |
80 |
| 250/267 |
With radiation control to detector |
29 |
| 250/269.1 |
With source and detector |
107 |
| 250/269.3 |
Having gamma source and gamma detector |
98 |
| 250/269.6 |
Having neutron source and gamma detector |
89 |
| 250/269.8 |
With detection in plural consecutive time intervals |
61 |
| 250/269.7 |
With plural gamma detectors |
69 |
| 250/269.4 |
Having neutron source and neutron detector |
78 |
| 250/269.5 |
Having thermal neutron detector |
56 |
| 250/269.2 |
With plural types of detectors |
38 |
| 250/268 |
With well-engaging means |
38 |
| 250/254 |
With drill or drilling |
79 |
| 250/255 |
With sampling |
193 |
| 250/330 |
Infrared-to-visible imaging |
533 |
| 250/332 |
Including detector array |
780 |
| 250/333 |
Including image tube-type detector |
78 |
| 250/331 |
Including liquid crystal detector |
45 |
| 250/334 |
Including means for scanning field of view |
317 |
| 250/306 |
Inspection of solids or liquids by charged particles |
1595 |
| 250/440.11 |
Analyte supports |
200 |
| 250/441.11 |
With air lock or evacuation means |
184 |
| 250/443.1 |
With heat transfer or temperature-indication means |
119 |
| 250/442.11 |
With object moving or positioning means |
527 |
| 250/311 |
Electron microscope type |
964 |
| 250/310 |
Electron probe type |
1623 |
| 250/308 |
Including a radioactive source |
154 |
| 250/307 |
Methods |
1350 |
| 250/309 |
Positive ion probe or microscope type |
450 |
| 250/336.1 |
Invisible radiant energy responsive electric signalling |
437 |
| 250/356.1 |
Flow metering |
54 |
| 250/356.2 |
Using radioactive tracer |
27 |
| 250/357.1 |
Fluent material level signalling |
69 |
| 250/374 |
Including a radiant energy responsive gas discharge device |
350 |
| 250/375 |
Methods |
46 |
| 250/385.1 |
Plural chambers or three or more electrodes |
369 |
| 250/385.2 |
Spark chambers |
12 |
| 250/386 |
With a periodic electrode bias varying means |
27 |
| 250/376 |
With electroscopic indicators |
32 |
| 250/377 |
With charge generator |
17 |
| 250/378 |
With charge storage means |
14 |
| 250/388 |
With indicator |
51 |
| 250/382 |
With means to ionize the gas |
87 |
| 250/383 |
Emissive fluent type, or with transmissive fluent material |
11 |
| 250/384 |
Radioactive |
56 |
| 250/379 |
With means to supply the gas |
60 |
| 250/380 |
Radioactive gas, or with gas-borne radioactive material |
51 |
| 250/381 |
With radioactive source |
146 |
| 250/387 |
With periodic electrode bias supply |
18 |
| 250/389 |
Including ionization means |
71 |
| 250/338.1 |
Infrared responsive |
957 |
| 250/338.2 |
Ferroelectric, ferromagnetic, photomagnetic types |
74 |
| 250/340 |
Methods |
235 |
| 250/342 |
Locating infrared emissive objects |
569 |
| 250/341.1 |
With irradiation or heating of object or material |
332 |
| 250/341.6 |
Heating of object or material |
170 |
| 250/341.3 |
Including polarizing means |
53 |
| 250/341.2 |
Including probe |
77 |
| 250/341.8 |
Measuring infrared radiation reflected from sample |
392 |
| 250/341.5 |
With calibration |
94 |
| 250/341.7 |
With multiple sources |
84 |
| 250/341.4 |
With semiconductor sample |
77 |
| 250/349 |
Plural signalling means |
353 |
| 250/350 |
With periodic beam varying means |
36 |
| 250/338.3 |
Pyroelectric type |
350 |
| 250/338.4 |
Semiconducting type |
417 |
| 250/353 |
With beam deflector or focussing means |
407 |
| 250/338.5 |
With means to analyze uncontained fluent material |
193 |
| 250/343 |
With means to transmission-test contained fluent material |
835 |
| 250/345 |
Plural beam/detector pairs |
195 |
| 250/346 |
Plural temperature sensitive signalling means |
26 |
| 250/344 |
Plural series signalling means |
54 |
| 250/347 |
With movable beam deflector or focussing means |
226 |
| 250/348 |
Controlled by signalling means |
16 |
| 250/351 |
With periodic beam varying means |
156 |
| 250/339.01 |
With selection of plural discrete wavelengths or bands |
161 |
| 250/339.14 |
Detecting infrared emissive objects |
71 |
| 250/339.15 |
Sensing flame or explosion |
122 |
| 250/339.02 |
Including detector array |
197 |
| 250/339.03 |
Including temperature control means |
76 |
| 250/339.04 |
Including temperature determining means |
85 |
| 250/339.05 |
With additional noninfrared wavelengths |
102 |
| 250/339.06 |
With radiation source |
114 |
| 250/339.1 |
Determining moisture content |
98 |
| 250/339.07 |
Including spectrometer or spectrophotometer |
260 |
| 250/339.08 |
Including fourier transform infrared spectrometry |
151 |
| 250/339.11 |
Measuring infrared radiation reflected from sample |
339 |
| 250/339.12 |
Using sample absorption for chemical composition analysis |
425 |
| 250/339.13 |
With gaseous sample |
310 |
| 250/339.09 |
With calibration steps in measurement process |
156 |
| 250/352 |
With temperature modifying means |
374 |
| 250/395 |
Methods |
82 |
| 250/390.01 |
Neutron responsive means |
195 |
| 250/390.04 |
Composition analysis |
100 |
| 250/390.05 |
For moisture content |
34 |
| 250/390.06 |
Density/thickness/consistency analysis |
29 |
| 250/390.11 |
Including a scintillator |
77 |
| 250/390.1 |
Including beam control |
37 |
| 250/391 |
Methods |
56 |
| 250/390.12 |
Position-sensitive |
20 |
| 250/390.02 |
Radiographic analysis |
41 |
| 250/390.07 |
Spectrum analysis |
36 |
| 250/390.09 |
Using diffractometers |
16 |
| 250/390.08 |
Using time-of-flight spectrometers |
10 |
| 250/390.03 |
With dose measurement |
58 |
| 250/392 |
With indicating or recording means |
70 |
| 250/394 |
Plural signalling means |
106 |
| 250/370.01 |
Semiconductor system |
449 |
| 250/370.02 |
Alpha particle detection system |
55 |
| 250/370.06 |
Discrimination-type system |
162 |
| 250/370.07 |
Dose or dose rate measurement |
138 |
| 250/370.03 |
Fission fragment/fissionable isotope detection system |
12 |
| 250/370.08 |
Imaging system |
397 |
| 250/370.09 |
X-ray or gamma-ray system |
979 |
| 250/371 |
Methods |
42 |
| 250/370.05 |
Neutron detection system |
66 |
| 250/370.12 |
Of material other than germanium, diamond, or silicon |
79 |
| 250/370.13 |
Containing cadmium telluride |
168 |
| 250/370.14 |
Particular detection structure (e.g., mos, pin) |
227 |
| 250/370.1 |
Position sensitive detection system |
119 |
| 250/370.11 |
Scintillation system |
588 |
| 250/370.04 |
Self-powered system |
29 |
| 250/370.15 |
Temperature control or compensation system |
139 |
| 250/354.1 |
Signalling means controls incident radiation |
47 |
| 250/336.2 |
Superconducting type |
87 |
| 250/372 |
Ultraviolet light responsive means |
554 |
| 250/373 |
With means to transmission-test contained fluent material |
204 |
| 250/337 |
With heating of luminophors |
122 |
| 250/358.1 |
With means to inspect passive solid objects |
390 |
| 250/359.1 |
Rectilinearly moving object |
205 |
| 250/360.1 |
With relative movement means |
99 |
| 250/361R |
With or including a luminophor |
314 |
| 250/361C |
Chemiluminescent detection |
109 |
| 250/362 |
Methods |
139 |
| 250/366 |
Plural electric signalling means |
296 |
| 250/367 |
Plural or composite luminophor |
410 |
| 250/368 |
With optics |
392 |
| 250/369 |
With output system |
406 |
| 250/363.01 |
With radiant energy source |
197 |
| 250/363.02 |
Body scanner or camera |
364 |
| 250/363.04 |
Emission tomography |
390 |
| 250/363.05 |
With detector support |
112 |
| 250/363.06 |
Using coded aperture |
39 |
| 250/363.1 |
With a collimator |
234 |
| 250/363.09 |
With calibration |
149 |
| 250/363.08 |
With detector support |
101 |
| 250/363.07 |
With distortion correction |
156 |
| 250/363.03 |
With positron source |
280 |
| 250/365 |
Ultraviolet light source |
108 |
| 250/364 |
With fluent source handling or collecting means |
131 |
| 250/393 |
With radiant energy source |
66 |
| 250/472.1 |
Invisible radiation responsive nonelectric signalling |
127 |
| 250/483.1 |
Luminescent device |
483 |
| 250/484.2 |
Requiring an additional energy source to cause luminescence |
85 |
| 250/484.4 |
With optically-stimulated phosphor |
516 |
| 250/484.5 |
Dosimeter |
60 |
| 250/484.3 |
With thermally-stimulated phosphor |
95 |
| 250/485.1 |
With light excluding casing having an aperture |
32 |
| 250/487.1 |
With optical member of material to directly modify luminous energy |
109 |
| 250/488.1 |
Plural planar layer type |
30 |
| 250/486.1 |
With plural luminescent material or plural luminescent containing layers or areas |
199 |
| 250/473.1 |
Methods |
57 |
| 250/474.1 |
Optical change type |
130 |
| 250/475.2 |
Photographic type |
44 |
| 250/482.1 |
With radiation filter, modifier, or shield (e.g., dosimeter badges) |
62 |
| 250/489 |
Ion collectors |
19 |
| 250/423R |
Ion generation |
896 |
| 250/426 |
Arc type |
96 |
| 250/427 |
Electron bombardment type |
235 |
| 250/423F |
Field ionization type |
202 |
| 250/424 |
Methods |
198 |
| 250/423P |
Photoionization type |
304 |
| 250/425 |
With sample vaporizing means |
123 |
| 250/281 |
Ionic separation or analysis |
1396 |
| 250/290 |
Cyclically varying ion selecting field means |
232 |
| 250/293 |
Alternating field ion selecting means |
102 |
| 250/291 |
Circular ion path |
169 |
| 250/292 |
Laterally resonant ion path |
645 |
| 250/286 |
Ion beam pulsing means with detector synchronizing means |
312 |
| 250/287 |
With time-of-flight indicator |
795 |
| 250/282 |
Methods |
1486 |
| 250/283 |
With collection of ions |
301 |
| 250/284 |
For material recovery |
66 |
| 250/294 |
Static field-type ion path-bending selecting means |
115 |
| 250/298 |
Magnetic field path-bending means |
114 |
| 250/299 |
With detector |
112 |
| 250/300 |
With detector control or regulating |
47 |
| 250/296 |
Plural diverse-type static path-bending fields |
108 |
| 250/297 |
For causing complex ion path |
29 |
| 250/295 |
With variable beam shifting field means |
23 |
| 250/289 |
With evacuation or sealing means |
108 |
| 250/285 |
With plural, simultaneous ion generators |
76 |
| 250/288 |
With sample supply means |
1644 |
| 250/492.1 |
Irradiation of objects or material |
1182 |
| 250/492.3 |
Ion or electron beam irradiation |
1307 |
| 250/492.2 |
Irradiation of semiconductor devices |
2197 |
| 250/492.21 |
Ion bombardment |
919 |
| 250/492.22 |
Pattern control |
701 |
| 250/492.24 |
Photocathode projection |
43 |
| 250/492.23 |
Variable beam |
293 |
| 250/458.1 |
Luminophor irradiation |
1224 |
| 250/459.1 |
Methods |
625 |
| 250/462.1 |
Self-luminous article |
98 |
| 250/466.1 |
Covers, keys, or luminous attachments therefor |
8 |
| 250/463.1 |
Dials, pointers, gauges, and bands |
12 |
| 250/465.1 |
Manual operators or luminous attachments therefor |
7 |
| 250/464.1 |
Pendants |
2 |
| 250/467.1 |
Reticles, gun sights or with optical element |
13 |
| 250/461.1 |
With ultraviolet source |
598 |
| 250/461.2 |
Biological cell identification |
363 |
| 250/491.1 |
Means to align or position an object relative to a source or detector |
693 |
| 250/909 |
Methods and apparatus ancillary to stimulable phosphor systems |
32 |
| 250/304 |
Methods including separation or nonradiant treatment of test materials |
106 |
| 250/301 |
Methods of determining oil presence, contamination or concentration |
109 |
| 250/526 |
Miscellaneous |
33 |
| 250/900 |
Optical liquid level sensors |
25 |
| 250/901 |
With gap between light guide elements (includes open light path preset) |
19 |
| 250/902 |
With closed light path preset |
15 |
| 250/903 |
With prism contacting liquid |
31 |
| 250/904 |
With single light guide element to guide light in a continuous path |
18 |
| 250/905 |
With longitudinal irregularity |
3 |
| 250/906 |
With large scale longitudinal bend |
4 |
| 250/907 |
With portions of light guide coating or cladding removed |
3 |
| 250/908 |
With waveguide twisted about its longitudinal axis |
1 |
| 250/DIG.1 |
Passive intrusion detectors |
281 |
| 250/200 |
Photocells; circuits and apparatus |
87 |
| 250/215 |
Combined with diverse-type device |
113 |
| 250/554 |
Flame light source |
137 |
| 250/239 |
Housings (in addition to cell casing) |
876 |
| 250/550 |
Interference pattern analysis (e.g., spatial filtering or holography) |
123 |
| 250/216 |
Optical or pre-photocell system |
1127 |
| 250/226 |
Color (e.g., filter or spectroscope) |
956 |
| 250/221 |
Controlled by article, person, or animal |
1438 |
| 250/222.1 |
Inanimate article |
449 |
| 250/224 |
Article and light ray relatively moved during sensing |
104 |
| 250/223R |
Conveyor or chute |
508 |
| 250/223B |
Bottles |
407 |
| 250/222.2 |
Particle detection |
161 |
| 250/573 |
Fluent material in optical path |
501 |
| 250/575 |
Plural paths |
142 |
| 250/576 |
Sample holder or supply |
215 |
| 250/574 |
Scattered or reflected light |
677 |
| 250/577 |
Volume or level |
343 |
| 250/237R |
Hoods, grating, baffles, diaphragms, masks |
284 |
| 250/237G |
Gratings (moire fringes) |
968 |
| 250/566 |
Including coded record |
267 |
| 250/568 |
Digital information |
146 |
| 250/569 |
Card type |
50 |
| 250/570 |
Tape, drum, or disc types |
97 |
| 250/228 |
Integrating sphere |
154 |
| 250/227.11 |
Light conductor |
830 |
| 250/227.14 |
Condition responsive light guide (e.g., light guide is physically affected by parameter sensed which results in light conveyed to the photocell) |
627 |
| 250/227.18 |
Causing light spectral frequency/wavelength change |
211 |
| 250/227.17 |
Causing polarization change in fiber |
149 |
| 250/227.19 |
With coherent interferrometric light |
213 |
| 250/227.16 |
With detection of fiber microbend caused by parameter affecting fiber |
184 |
| 250/227.15 |
With detection of macroscopic break in fiber |
109 |
| 250/227.32 |
End illuminated light conductor with noncircular geometric cross section |
49 |
| 250/227.13 |
Light pen |
33 |
| 250/227.12 |
Optical delay line |
107 |
| 250/227.31 |
Side or edge illuminated light conductor or collector |
98 |
| 250/227.27 |
With coherent interferrometric light |
150 |
| 250/227.24 |
With coupling enhancement means |
281 |
| 250/227.25 |
Fluid coupling |
150 |
| 250/227.2 |
With imaging |
109 |
| 250/227.21 |
With light chopping or modulation |
331 |
| 250/227.22 |
Keyboard or other manual switch controlled |
82 |
| 250/227.26 |
With scanning |
92 |
| 250/227.28 |
With specific configuration of light conductor components with respect to each other |
222 |
| 250/227.29 |
With specific illumination or viewing orientation of light conductor relative to viewed object (e.g., light normal to, and detector at 45 degree angle to, viewed object) |
80 |
| 250/227.23 |
With spectral frequency/wavelength discrimination |
328 |
| 250/227.3 |
With variable orientation of light conductor relative to viewed object (e.g., goniometer) |
12 |
| 250/229 |
Light valve (e.g., iris diaphragm) |
274 |
| 250/231.1 |
Actuated by dynamic external physical quantity |
350 |
| 250/231.11 |
Actuated by gauge element deflection |
35 |
| 250/231.12 |
Gyroscopes |
33 |
| 250/231.19 |
Pressure-responsive light valves |
188 |
| 250/231.13 |
Shaft angle transducers |
694 |
| 250/231.14 |
Incremental shaft readers; i.e., with means to generate increments of angular shaft rotation |
487 |
| 250/231.18 |
Position indicating shaft encoders with means to generate a unique signal for each specific angular shaft position |
310 |
| 250/231.16 |
Using phase difference of output signals from plural photodetectors |
366 |
| 250/231.17 |
With means to indicate a complete shaft rotation |
112 |
| 250/231.15 |
With plural gear driven discs |
48 |
| 250/232 |
Light chopper type |
21 |
| 250/233 |
Rotary |
114 |
| 250/230 |
Reflection type(e.g., mirror galvanometer) |
69 |
| 250/234 |
Means for moving optical system |
867 |
| 250/235 |
Repetitious path |
430 |
| 250/236 |
Rotary motion |
432 |
| 250/578.1 |
Plural light sources or optical paths |
132 |
| 250/225 |
Polarizing |
510 |
| 250/206 |
Photocell controlled circuit |
140 |
| 250/210 |
Bridge and push-pull circuits |
33 |
| 250/207 |
Electron multiplier |
266 |
| 250/206.1 |
Having means to generate positional information in at least one plane of a target moving relative to one or more photodetectors |
228 |
| 250/206.2 |
Detection of positional information in two or more planes (e.g., azimuth and elevation; hour angle and declination) |
142 |
| 250/206.3 |
With moving reticle in optical path |
10 |
| 250/555 |
Including coded record |
58 |
| 250/556 |
Document verification or graph reader |
209 |
| 250/557 |
With means to position, direct, or detect record |
154 |
| 250/208.1 |
Plural photosensitive image detecting element arrays |
2869 |
| 250/208.2 |
Plural photosensitive nonimage detecting elements |
291 |
| 250/208.4 |
Used to switch an electrical circuit or device on or off |
78 |
| 250/208.3 |
With electronic scanning |
68 |
| 250/208.5 |
With photodetector output ratioing other than by bridge or push-pull circuits |
22 |
| 250/208.6 |
With specific relative positional geometry of photosensitive elements (e.g., an annular photosensitive element surrounding a coaxially mounted photosensitive element) |
102 |
| 250/214R |
Special photocell or electron tube circuits |
978 |
| 250/214B |
Ambient light desensitizing means |
160 |
| 250/214AL |
Ambient light responsive |
220 |
| 250/214A |
Amplifier type |
596 |
| 250/214LA |
Light amplifier type |
152 |
| 250/214LS |
Switching type |
168 |
| 250/214VT |
Vacuum tube type |
654 |
| 250/214AG |
Automatic gain control |
210 |
| 250/214C |
Compensation |
212 |
| 250/214DC |
Digital circuitry |
43 |
| 250/214SW |
Electronic switch |
60 |
| 250/214D |
Light dimmers |
17 |
| 250/214L |
Logarithmic/linear signal |
49 |
| 250/214P |
Photographic control |
74 |
| 250/214PR |
Photosensitive rheostat type |
80 |
| 250/214RC |
Rate of change |
42 |
| 250/214SG |
Self-generating type |
41 |
| 250/214SF |
Slave flash |
9 |
| 250/214.1 |
Special photocell |
837 |
| 250/558 |
Stereoplotters |
37 |
| 250/564 |
With circuit for evaluating a fluent material |
66 |
| 250/565 |
With comparison |
72 |
| 250/201.1 |
Photocell controls its own optical systems |
232 |
| 250/204 |
Adjusting optical system to balance brightness in plural paths |
314 |
| 250/201.2 |
Automatic focus control |
399 |
| 250/201.4 |
Active autofocus |
296 |
| 250/201.5 |
With optical storage medium; e.g., optical disc, etc. |
563 |
|
